Mayotte weather by month

In Mamoudzou, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around April 13 and lasts for 7.7 months, ending around December 2. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 94% of the time on average.

The cloudier part of the year begins around December 3 and lasts for 4.3 months, ending around April 12. The cloudiest month is January, when it is overcast or mostly cloudy 74% of the time.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Mamoudzou is typically light breeze, near 15 km/h, and varies moderately with the seasons.

The windier part of the year lasts 3.6 months, from around Apr 29 to Aug 15. The windiest month is July, averaging about 20 km/h (light breeze).

The calmer part of the year runs from around Aug 16 to Jan 2, with September the calmest month at about 11 km/h.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Mamoudzou receives about 5.9 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.9 and 7.0 kWh/m².

The brighter stretch of the year lasts 4.5 months, from around Aug 25 to Jan 9. The brightest month is November, averaging about 7.0 kWh/m² (intense).

The dimmest month is June, down near 4.9 kWh/m² — roughly 29% less than the November peak.